1 // RUN: %clang_dfsan -gmlt -DOFFSET=0 -mllvm -dfsan-track-origins=1 %s -o %t && \
2 // RUN: %run %t >%t.out 2>&1
3 // RUN: FileCheck %s --check-prefix=CHECK0 < %t.out
4 //
5 // RUN: %clang_dfsan -gmlt -DOFFSET=10 -mllvm -dfsan-track-origins=1 %s -o %t && \
6 // RUN: %run %t >%t.out 2>&1
7 // RUN: FileCheck %s --check-prefix=CHECK10 < %t.out
8 //
9 // REQUIRES: x86_64-target-arch
10
11 #include <sanitizer/dfsan_interface.h>
12
13 #include <string.h>
14
15 int xx[10000];
16
17 volatile int idx = 30;
18
19 __attribute__((noinline))
fn_g(int a,int b)20 void fn_g(int a, int b) {
21 memset(&xx[idx], a, sizeof(a));
22 memset(&xx[idx + 10], b, sizeof(b));
23 }
24
25 __attribute__((noinline))
fn_f(int a,int b)26 void fn_f(int a, int b) {
27 fn_g(a, b);
28 }
29
main(int argc,char * argv[])30 int main(int argc, char *argv[]) {
31 int volatile z1;
32 int volatile z2;
33 dfsan_set_label(8, (void *)&z1, sizeof(z1));
34 dfsan_set_label(16, (void *)&z2, sizeof(z2));
35 fn_f(z1, z2);
36 dfsan_print_origin_trace(&xx[idx + OFFSET], NULL);
37 return 0;
38 }
39
40 // CHECK0: Taint value 0x8 {{.*}} origin tracking ()
41 // CHECK0: Origin value: {{.*}}, Taint value was created at
42
43 // CHECK0: #0 {{.*}} in main {{.*}}origin_memset.c:[[@LINE-10]]
44
45 // CHECK10: Taint value 0x10 {{.*}} origin tracking ()
46 // CHECK10: Origin value: {{.*}}, Taint value was created at
47
48 // CHECK10: #0 {{.*}} in main {{.*}}origin_memset.c:[[@LINE-14]]
49